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69906 = 2361191
BaseRepresentation
bin10001000100010010
310112220010
4101010102
54214111
61255350
7410544
oct210422
9115803
1069906
1148581
1234556
1325a85
141b694
1515aa6
hex11112

69906 has 16 divisors (see below), whose sum is σ = 142848. Its totient is φ = 22800.

The previous prime is 69899. The next prime is 69911. The reversal of 69906 is 60996.

It can be divided in two parts, 6990 and 6, that added together give a palindrome (6996).

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 12 and base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 69906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271 + ... + 461.

It is an arithmetic number, because the mean of its divisors is an integer number (8928).

269906 is an apocalyptic number.

69906 is an abundant number, since it is smaller than the sum of its proper divisors (72942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71424).

69906 is a wasteful number, since it uses less digits than its factorization.

69906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 69906 is about 264.3974281267. The cubic root of 69906 is about 41.1943970764.

The spelling of 69906 in words is "sixty-nine thousand, nine hundred six".

Divisors: 1 2 3 6 61 122 183 191 366 382 573 1146 11651 23302 34953 69906